Pipe roof flashing



June 10, 1930. R. SHERLOCK PIPE ROOF FLASHING Filed Jan 19, 1929.

ATTOENEY Patented June 10, 1930 UNITED STATES PATENT OFFjCEi ROBERT SHERLOCK,.OF TORONTO, ONTARIO CANADA.

PIPE ROOF FLASHING 1 Application filed January 19, 1929. Serial No. 333,577

lead or' other auxiliary metal flashing cusused in the completion of a pipe flashing; to utilize the flashing itself in conjunctionwith the roofing material to form a weatherproof joint; to economize in the expenditures for both labour and material; to prevent failure of the supporting member for the pipe or tubular member; to construct a flashing that may be readily adapted for a roof of any pitch; and generally, a durable and efficient flashing for pipe extensions at amoderate first cost and low main tenance charges, and toimprove on my invention as shown in United States application7, Serial Number 183,829, filed April 14, 192 a In the drawings, Figure 1 is a plan view of the flashing to be used on aislanting roof.

15 tomarily Figure 2is a sectional view taken on lines 2-2 in Figure 1. V H r Figure 3' is a plan view of the flashing showing the several parts in detail.

Figure 4 1s a sectional view taken on the lines H in Figure 3.

Figure 5 is a plan view of the modified form of the flashing to be used on floors or so-called flat or slightly slanting roofs.

Figure 6 is a sectional view taken on line 6-6 in Figure 5. I

Figure 7 is a vertical and cross sectional view of a modified flashing installed where a lead sheet isused in making the seal or joint;

Like numerals of reference indicate corresponding parts in the variousfigures.

Referring to the drawings, 10 is the flashing complete having the opening ll'through which the pipe, may be inserted. The mate- 'in that portion which extends upwardly and to provide i as shown, and the caulk-ing 26 then applied.

rial used'in the construction of'the flashing 10 is preferably cast iron or'some such metal, but the flashing could be forged or stamped if found advisable. 12 is the thimble or hub portion of the flashing, having the receding wall 13 at one side and the slanting wall 1% at the other side. The opening 11 increases in diameter from the lower'part of the thimble to the upper part. 15 is the outer flange portion of the flashing, which may be extended .60 r

to any required size, so as to make a perfect weather-proof'seal with the roofing material. 16, 17 and 18 are grooves cutalong the upper face of the flange 15 and forming score lines. Along these grooves'the differentparts of the flange may be broken off to allow the hub portion to be brought into close proximity with a wall orother. projection in the roof. 27 aretwo screw holes cut in the flange 15 under the roofing material 30, thus forming. Y awatershed. 19 are fingers extending inwardly from the lower portion of the thimbleor hub portion 12 from the receding wall 13. In applying this flashingto a slanting) roof, the inwardly extending fingers 19 may ebroken oil was to allow thepipe 21' tobe vertical and at the samep'time make a perfectseal around the lower part of the hub or thimble 12, for the retention'ofthe lead 'or other caulking.

Figure 5 shows a modified formwhich'iis' especiallyadapted to flat or' slightly slanting.- roofs. 22 is a hub orthimble portion having the inwardly slanting walls 25. 23 is a circular flange which may be made to any required diameter. 16A, 17A and 18A are V- cut grooves forming score lines in the-flange 23 as shown, and along which the different parts of the flange may be separated from the main portion as found desirable. The diameter of the thimble orhub portion 22 increases towards the top so as to ensure perfect caulking about the pipe 21. In Figure 7, this flashing is shown in conjunction with theregulai tion sheet lead flashing now in use. The extended portions of the flange 23 may be broken off, leaving the smaller flange 23A. Thelead flashing is bent over into the hub,

of December, 1928.

This invention in operation is adapted for use on roofs of practically any pitch or slant. The extended flange portion 15 may be so arranged with respect to the roofing material that there will be no necessity for using a lead or copper sheet in conjunction with the flashing in order to form a water and weather proof joint with the roofing material or covering. The elevated portion of the flange 15 is inserted under the roofing material as at 15A in Figure 1, while'the lower portion of said flange 15 rests on the upper surface of the roofing material as at 1513. Thus, this flange 15 serves exactly the same purpose as.

the auxiliary lead or copper sheet now commonly used and may be installed much more readily and at a greatly reduced cost and ensures a more rigid and endurable construction than when an auxiliary sheet flashing is used.

This flashing may also be utilized as an expansion joint by the insertion of oakum and an elastic cement in place of the usual lead caulking commonly used between the pipe "and the flashing.

'- l/Vhat I claim is:

In a pipe roof flashing construction, a hub portion adapted to encircle a pipe and having a converging Wall at one side and a receding Wall at the other and inwardly extending" teeth from said receding wall adapted to be broken off to allow said flashing to be set at different angles in regard to said pipe and at the same time form a tight fit therewith about its lower edge in order to properly retain the caulking between said pipe and said thimble, an outwardly extending flange formed at t-he upper end of said thimble or hub portion, score lines in said flange to allow sections thereof to be readily broken therefrom to reduce the area of said flange, and means in said flange for co-actingwith a roofing material to form a waterproof joint without the aid of an extra metal plate or lead sheet.

Signed at the city of Toronto, this 5th day ROBERT SHERLOCK. 

